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Finding the Fourth Proportional to 144,818.80, 217,228.32 and 39,638.64

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Solution

The fourth proportional to 144,818.80, 217,228.32 and 39,638.64 is: 59,457.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,818.80 : 217,228.32 = 39,638.64 : x
  2. Step 2: Convert to fraction form
    144,818.80/217,228.32 = 39,638.64/x
  3. Step 3: Cross multiply
    144,818.80x = 217,228.32 × 39,638.64
  4. Step 4: Simplify right side
    144,818.80x = 8,610,635,174.28
  5. Step 5: Solve for x
    x = 8,610,635,174.28/144,818.80
  6. Step 6: Final answer
    x = 59,457.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.